| 摘要 |
PURPOSE:To attain the valid utilization of a sophisticated service function offered by a digital line by communicating a master set and a slave set in a radio wave so as to eliminate an in-home wiring. CONSTITUTION:A radio transmitter 23 converts a digital wire signal from a controller 22 into an output digital radio signal ODR in cooperation with an antenna multicoupler 25 and an antenna 26 and sends the converted output digital radio signal ODR to a cordless slave set in a radio wave. On the other hand, an input digital radio signal IDR from the cordless slave set is received by a radio receiver 24 via the antenna multicoupler 25 and the antenna 26. The radio receiver 24 converts the received input digital radio signal IDR into a digital wired signal CDW. The converted digital wired signal CDW is sent to the controller 22. The radio receiver 24 in cooperation with the antenna multicoupler 25 and the antenna 26 receives the input digital radio signal IDR from the cordless slave set and received input digital radio signal TDR is converted into the digital wired signal CDW. |
